Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix APIC ID sizing bug on larger systems, clean up MAX_APICS confusion
  x86, acpi: Parse all SRAT cpu entries even above the cpu number limitation
  x86, acpi: Add MAX_LOCAL_APIC for 32bit
  x86: io_apic: Split setup_ioapic_ids_from_mpc()
  x86: io_apic: Fix CONFIG_X86_IO_APIC=n breakage
  x86: apic: Move probe_nr_irqs_gsi() into ioapic_init_mappings()
  x86: Allow platforms to force enable apic

1 files changed, 22 insertions, 15 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 16c2db8750a2..f6cd5b410770 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1933,8 +1933,7 @@ void disable_IO_APIC(void)
  *
  * by Matt Domsch <Matt_Domsch@dell.com>  Tue Dec 21 12:25:05 CST 1999
  */
-
-void __init setup_ioapic_ids_from_mpc(void)
+void __init setup_ioapic_ids_from_mpc_nocheck(void)
 {
         union IO_APIC_reg_00 reg_00;
         physid_mask_t phys_id_present_map;
@@ -1943,15 +1942,6 @@ void __init setup_ioapic_ids_from_mpc(void)
         unsigned char old_id;
         unsigned long flags;
 
-        if (acpi_ioapic)
-                return;
-        /*
-         * Don't check I/O APIC IDs for xAPIC systems.  They have
-         * no meaning without the serial APIC bus.
-         */
-        if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
-                || APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
-                return;
         /*
          * This is broken; anything with a real cpu count has to
          * circumvent this idiocy regardless.
@@ -2005,7 +1995,6 @@ void __init setup_ioapic_ids_from_mpc(void)
                         physids_or(phys_id_present_map, phys_id_present_map, tmp);
                 }
 
-
                 /*
                  * We need to adjust the IRQ routing table
                  * if the ID changed.
@@ -2041,6 +2030,21 @@ void __init setup_ioapic_ids_from_mpc(void)
                         apic_printk(APIC_VERBOSE, " ok.\n");
         }
 }
+
+void __init setup_ioapic_ids_from_mpc(void)
+{
+
+        if (acpi_ioapic)
+                return;
+        /*
+         * Don't check I/O APIC IDs for xAPIC systems.  They have
+         * no meaning without the serial APIC bus.
+         */
+        if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
+                || APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
+                return;
+        setup_ioapic_ids_from_mpc_nocheck();
+}
 #endif
 
 int no_timer_check __initdata;
@@ -3593,7 +3597,7 @@ int __init io_apic_get_redir_entries (int ioapic)
         return reg_01.bits.entries + 1;
 }
 
-void __init probe_nr_irqs_gsi(void)
+static void __init probe_nr_irqs_gsi(void)
 {
         int nr;
 
@@ -3910,7 +3914,7 @@ static struct resource * __init ioapic_setup_resources(int nr_ioapics)
         return res;
 }
 
-void __init ioapic_init_mappings(void)
+void __init ioapic_and_gsi_init(void)
 {
         unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;
         struct resource *ioapic_res;
@@ -3948,6 +3952,8 @@ fake_ioapic_page:
                 ioapic_res->end = ioapic_phys + IO_APIC_SLOT_SIZE - 1;
                 ioapic_res++;
         }
+
+        probe_nr_irqs_gsi();
 }
 
 void __init ioapic_insert_resources(void)
@@ -4057,7 +4063,8 @@ void __init pre_init_apic_IRQ0(void)
 
         printk(KERN_INFO "Early APIC setup for system timer0\n");
 #ifndef CONFIG_SMP
-        phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
+        physid_set_mask_of_physid(boot_cpu_physical_apicid,
+                                         &phys_cpu_present_map);
 #endif
         /* Make sure the irq descriptor is set up */
         cfg = alloc_irq_and_cfg_at(0, 0);